Links not showing in Navigation bar (4 posts)

I'm currently setting up a new site. I am totally new to WordPress so have been looking at tutorials etc. My main problem is my Links that I created are not showing up in my navigation area. My old Home one is but since then I made a new one to make my front page static. I created the new home page and also other pages which I have put into a menu but they are not showing up. The only time they have shown up is when I reduce my page and then my slider and coloured post background disappears.